for every \(\chi ,\chi ^{\prime } \in L^2(\Omega ,\mathcal {F}_t,\mathbb {P})\) , and for some constant \(C>0\)  that does not depend on \(t\) , \(\chi \)  and \(\chi ^{\prime }\) .
The latter property has been established for instance in [1]}, [2]} or [3]}, the latter references assuming monotonicity properties such as those of condition REF .

